KR19990024223A - Wireless hands free equipment for mobile phones - Google Patents

Abstract

The present invention relates to a wireless hands free device for a mobile phone,

In a mobile phone provided with a transmitting unit 3, a receiving unit 1, a ring signal detecting unit 5, and a connecting jack 8,

And is connected to the connection jack 8 of the mobile phone and is operated to relay voice signals between the wireless ear microphone unit and the mobile phone. When a buried ring signal is detected by the mobile phone, the power is automatically turned on and the ring signal is transmitted to the wireless ear microphone unit Interface means;

A microphone 58 and a speaker 49 are provided to allow the user to talk to the other party. When the mastering signal is received by the interface means, a carrier for switching the mobile phone into the calling state is generated, A wireless ear microphone means for enabling a user to talk to a caller through a speaker and a microphone without using a microphone; So that it is convenient to use because the electric wire is not connected between the mobile phone and the ear microphone, and when the mobile phone is received in a waiting state, the mobile phone is automatically switched to the calling state, thereby providing convenience to the user Free hand-free device for a mobile phone.

Description

Wireless hands free equipment for mobile phones

The present invention relates to a wireless hand-free device for a mobile phone, and more particularly, to a wireless hand-free device having a wireless transmitting / receiving device and an interface means connected to the mobile phone for relay operation so as to transmit / receive a voice signal between the wireless ear- So that the user can communicate with the other party without manipulating the mobile phone. Therefore, the user can conveniently use the mobile phone since the electric wire is not connected between the mobile phone and the earphone, and when the mobile phone is in a standby state, And to provide a convenience to the user by configuring the handset to be switched to a call state.

1 shows a general cellular phone configuration,

A receiving unit 1 for receiving a signal transmitted from a base station via an antenna ANT1, a microphone 2 for converting a voice of a user into an electric signal, and a voice signal via a microphone 2 to an antenna ANT1 A speaker 4 for outputting a voice signal received by the receiving unit 1 as sound and a ring signal detecting unit 5 for detecting a ring signal among the signals received by the receiving unit 1, A power supply unit 6 for supplying power to each component of the mobile phone, a power switch 7 for switching the power supply unit 6 according to a user's operation and supplying the output voltage of the power supply unit 6 to each component, A connection jack 8 for electrically connecting to the same braking device, a key part 9 for inputting various functions of the mobile phone, and a control part for controlling each component of the mobile phone to operate according to the input of the key part 9 (10), a connection jack for connecting the ear microphone 11).

The thus-configured mobile phone is converted into an electrical signal through the microphone 2, and then transmitted to the other party through the transmitter 3, and the voice signal received from the other party is transmitted to the speaker 1 through the receiver 1, (4), so that the user can talk with the other party without restriction on the location.

Such a mobile phone provides convenience to the general user in that it is possible to make a call without being limited to the location. However, when the driver wants to make a call using the mobile phone, the mobile phone must be held with one hand to cause a collision.

Accordingly, there is provided a hand-free device that allows a user to make a call using a mobile phone while driving or doing other work without using a hand. Such a hand-free device includes a separate speaker and a high-performance microphone installed in the vehicle, Is connected to the inside of the mobile phone through the connection jack 8 formed in the mobile phone, so that the user can communicate with the other party without driving the mobile phone while driving.

However, since such a hand-free device requires an expensive device, it gives an economical burden to the user who uses it, and the contents of the conversation with the other party are outputted through the speaker installed in the car, When you are on board, you can not speak to your opponent secretly.

In order to solve such a problem, an ear muff composed of an earphone and a microphone is provided, and a connection jack of a microphone is connected to a connection jack 11 formed in a mobile phone. Since the output of the other party is outputted through the earphone, the contents of the conversation are not leaked even if there is another person in the car.

However, since the ear microphone is connected to the mobile phone by a wire of a certain length, the mobile phone should always be placed in the vicinity of the user, and the wire connecting the ear microphone and the mobile phone during operation is very inconvenient for the handle operation and other operations There was a problem to be worked on.

In order to solve the above problems, the present invention provides a wireless communication device including a wireless earphone unit having a wireless transceiver, and interface means connected to the mobile phone for relaying voice signals between the wireless earphone unit and the mobile phone, So that it is easy to use because the wire is not connected between the mobile phone and the earphone, and when the mobile phone is received in the waiting state, the mobile phone is automatically switched to the call state The present invention provides a wireless hand-free device for a mobile phone, which can provide convenience to a user.

1 is a block diagram showing a configuration of a general cellular phone.

2 is a block diagram showing interface means applied to the present invention;

3 is a block diagram showing a wireless ear microphone unit applied to the present invention;

4 is a circuit diagram illustrating an embodiment of interface means applied to the present invention;

DESCRIPTION OF THE REFERENCE NUMERALS

20: first transmission unit, 21: first power supply unit,

23: connection jack, 25: ring signal detector,

26: a signal generator, 30: a first receiver,

31: first detector, 34: carrier detector,

40: second receiving section, 41: second power section,

44: Second detector. 47: ring signal detector,

50: second transmission unit, 53: gain limiter,

54: carrier generator, 55: second frequency modulator,

The present invention for achieving the above object is configured as shown in FIGS. 2 to 4,

In a mobile phone provided with a transmitting unit 3, a receiving unit 1, a ring signal detecting unit 5, and a connecting jack 8,

When the ring signal is detected from the mobile phone, the power is automatically turned on and the ring signal is transmitted to the wireless ear microphone unit. Interface means;

A microphone 58 and a speaker 49 for making a call with the other party are provided. When a ring signal is received from the interface means, a carrier for switching the mobile phone into a talk state is generated, And a wireless ear microphone means for making a telephone conversation with the other party through a microphone;

.

The interface means includes a first transmitting unit 20 and a first receiving unit 30,

The first transmitting unit 20 includes a first power supply unit 21 for supplying power and a second switch 21 for supplying power to the first power supply unit 21 to each component of the interface unit by switching operation by an input control signal, A ring signal detector 25 for detecting a ring signal among the signals inputted through the connection jack 23 and turning on the first switch, A signal generator 26 for generating a predetermined transmission signal when a ring signal is detected, a voice signal input through the connection jack 23 and a transmission signal output from the signal generator 26 at a first transmission frequency A first frequency modulator 24 and a first amplifier 28 for amplifying a signal modulated at a first transmission frequency and transmitting the amplified signal via an antenna,

The first receiver 30 includes a first detector 31 for detecting signals having a second transmission frequency among the signals received through the antenna ANT2, a second amplifier 32 for amplifying the detected signal, A filter 33 for filtering the signal output from the second amplifier 32 to remove noise and supplying the filtered signal to the mobile phone through the connection jack 23; And a carrier detector 34 for detecting a carrier for supplying the carrier to the mobile phone through the connection jack 23.

The wireless ear microphone unit includes a second receiving unit 40 and a second transmitting unit 50,

The second receiving unit 40 includes a second power supply unit 41 for supplying power and a second switch for switching the output of the power supply unit 41 to the second transmitting unit 5 A third switch 43 for switching the output of the power supply unit 41 by the user's operation and supplying the output voltage of the power supply unit 41 to the second receiving unit 40, A third amplifier 45 for amplifying the detected signal, a filter 46 for filtering the amplified signal to remove noise and supplying the filtered signal to the speaker, And a ring signal detector 47 for detecting the ring signal from the signal output from the third amplifier 45 and turning on the second switch 42,

The second transmitting unit 50 includes a filter 51 for filtering a voice signal inputted through the microphone 58 to remove noise, a fourth amplifier 52 for amplifying the filtered signal, A gain limiter 53 for limiting a gain of a voice signal amplified by the speaker 52, a carrier generator 54 for generating a carrier for switching the mobile phone into a talk state after a predetermined time has elapsed when power is supplied, A second frequency modulator 55 for modulating the voice signal and the carrier at a second transmission frequency, and an amplifier 56 for amplifying the frequency modulated signal and transmitting the amplified signal through the antenna.

In addition, reference numerals 27, 35, 57, and 48 denote frequency oscillators and crystal oscillators that provide demodulated frequencies of a frequency modulator and a detector.

Hereinafter, the operation of the present invention will be described.

First, the user turns on the third switch 43 of the wireless ear microphone unit to supply power to the second receiving unit 40 so that the second receiving unit 40 is in the receiving standby state, and the interface unit is in the off state.

1, the ring signal detector 5 of the mobile phone detects the ring signal received through the antenna ANT1 and outputs the ring signal through the connection jacks 8 and 23 1 transmission unit 20 and the ring signal detector 25 of the first transmission unit 20 detects the ring signal inputted through the connection jack 23 and turns on the first switch 22 to turn on the first power source unit 21 to be supplied to the respective components of the interface means and at the same time outputs the ring signal to the signal generator 25.

The signal generator 25 generates a predetermined transmission signal according to the input of the ring signal and outputs the predetermined transmission signal to the first frequency modulator 24. The first frequency modulator 24 modulates the transmission signal according to the frequency outputted from the oscillator 27 Modulates the transmission signal and transmits the modulated transmission signal to the second receiving unit 40 of the wireless ear microphone unit existing in the reception standby state via the first amplifier 28 and the antenna ANT2.

The second detector 44 of the second receiving unit 40 receives a signal corresponding to a frequency output from the oscillator 48 among the signals received through the antenna ANT3, And the third amplifier 45 amplifies the detected transmission signal and outputs the amplified transmission signal.

The ring signal detector 47 of the second receiving unit 40 detects the ring signal output from the amplifier 45 and turns on the second switch 42 to operate the ring signal detector 47 to turn on the second power source unit 41, So that the power is supplied to the respective constituent elements of the second transmission unit 50. [0050] FIG.

When power is supplied to the second transmission unit 50, the carrier generator 54 supplies power and generates a carrier for switching the mobile phone into a talk state, and outputs the carrier to the second frequency modulator 55, The frequency modulator 55 modulates the input carrier to a second transmission frequency according to the frequency output from the oscillator 57 and transmits the modulated carrier to the first receiver 30 through the amplifier 56 and the antenna ANT3.

The detector 31 of the first receiving unit 30 detects a signal corresponding to a frequency outputted from the oscillator 35 among the signals received through the antenna ANT2, that is, the carrier output from the second transmitting unit 50 And outputs the amplified signal to the amplifier 32. The second amplifier 32 amplifies the detected signal, and the filter 33 filters and outputs the amplified signal.

The carrier detector 34 of the first receiving unit 30 detects the carrier output from the filter 33 and supplies the detected carrier to the mobile phone through the connection jacks 23 and 8 for the user to open the flip of the mobile phone The mobile phone having received the carrier is switched to the talk mode because it is a signal having the same function as inputting the call key.

The voice of the other party is received by the receiving unit 1 and then transmitted to the first transmitting unit 20 through the connecting jacks 8 and 23. The voice of the first calling party 20 1 frequency modulator 24 to the wireless ear microphone means via the antenna ANT2 and the voice of the transmitted talker is detected by the detector 44 of the second receiver 40 Amplified and filtered through the post amplifier 45 and the filter 46 and supplied to the speaker 49 so that the voice of the other party is output through the speaker 49 displayed on the user's ear.

The user's stimulation is filtered and amplified through the filter 51 and the amplifier 52 after being converted into an electric signal by the microphone 58 and then modulated by the second frequency modulator 55 to the second transmission frequency And the voice signal of the user transmitted through the antenna ANT3 is transmitted to the amplifier 32 and the filter 33 after being detected by the detector 31 of the first receiver 30, And then transmitted to the mobile phone through the connection jacks 23 and 8 and transmitted to the base station through the transmitter 3 of the mobile phone so that the other party can hear the user's voice.

On the other hand, the ring signal detector 25 continuously outputs a predetermined ring signal to the signal generator 26 while the user is talking, that is, while the voice signal is continuously input from the mobile phone, and the signal generator 26 The ring signal detector 47 continues to transmit the transmission signal to the ring signal detector 47 of the second receiver 40 through the first frequency modulator 24 so that the ring signal detector 47 continues to turn on the second switch 42 State.

When the call is terminated and the other party hangs up the phone, the mobile phone automatically switches from the calling state to the receiving standby state, so that no signal is output from the mobile phone through the connecting jacks 8 and 23. Thus, The ring signal detector 25 of the ring signal detector 25 can not detect any signal.

If the ring signal detector 25 fails to detect any signal, the first switch 22 is turned off to prevent the interface means from operating. When the interface means is turned off, the ring signal detector 47 of the second receiver 40 Also, since no signal is received, the second switch 42 is turned off, so that the second transmitting unit 50 is turned off and only the second receiving unit 40 is in the receiving standby state again.

That is, since the interface means and the second transmitting unit 50 operate only when talking to the other party, the power consumption can be remarkably reduced.

In the present invention, a signal transmitted / received between the first transmitter 20 and the second receiver 40 and a signal transmitted / received between the second transmitter 50 and the first receiver 30 are different from each other, So that voice signals can be transmitted and received smoothly between the microphone means.

That is, the first transmission frequency and the second transmission frequency are set to be different from each other.

4 is a circuit diagram showing an example of interface means applied to the present invention,

The first transmitter 20 includes an IC1 for modulating a signal to be transmitted at a first transmission frequency and an amplifying function, a crystal oscillator 27 for an oscillating function, capacitors C1 to C15, resistors R1 to R11 ), Coils (L1 to L4), and the like,

The first receiving unit 30 includes an IC 2 for receiving a signal received from the wireless ear microphone unit by a double heterodyne method and a filter 33, a crystal oscillator 35, capacitors C16 to C26, Resistors R12 to R15, and coils L5 and L6, and reference numeral 23 denotes a connection jack for connection with a mobile phone.

As described above, the present invention provides a wireless ear microphone unit having a wireless transceiver, and an interface unit connected to a mobile phone to perform relay operation so that voice signals can be transmitted and received between the wireless ear microphone unit and the mobile phone. It is convenient to use the mobile phone because it does not connect a wire between the mobile phone and the ear microphone so that the mobile phone is automatically switched to the calling state when the mobile phone is in a standby state, Free hands free apparatus for a mobile phone.

Claims (6)

In a mobile phone provided with a transmitting unit 3, a receiving unit 1, a ring signal detecting unit 5, and a connecting jack 8, When the ring signal is detected from the mobile phone, the power is automatically turned on and the ring signal is transmitted to the wireless ear microphone unit. Interface means; A microphone 58 and a speaker 49 for making a call with the other party are provided. When a ring signal is received from the interface means, a carrier for switching the mobile phone into a talk state is generated, A wireless ear microphone means for allowing a speaker and a microphone to talk to a partner speaker; And a wireless hand-free device for a mobile phone. 2. The apparatus of claim 1, wherein the interface means A first switch 22 for switching the first power supply unit 21 by a control signal to supply power to the first power supply unit 21 to each component of the interface unit, A ring signal detector 25 for detecting a ring signal among the signals inputted through the connection jack 23 and operating the first switch, a ring signal detector 25 for detecting a ring signal, And a first frequency modulator 24 for modulating a voice signal input through the connection jack 23 and a transmission signal output from the signal generator 26 to a first transmission frequency And a first transmitter (20). 2. The apparatus of claim 1, wherein the interface means A first amplifier 31 for detecting signals having a second transmission frequency among the signals received through the antenna ANT2, a second amplifier 32 for amplifying the detected signal, A filter 33 for filtering the received signal and supplying the filtered signal to the mobile phone through the connection jack 23 and a carrier for switching the mobile phone into the talk state from the signal output from the filter 33, And a carrier detector (34) for supplying the detected signal to a mobile phone through the first receiver (30). The wireless ear microphone according to claim 1, A second switch 42 for supplying an output voltage of the power supply section 41 to the second transmission section 5 in response to an input control signal, A third switch 43 for switching an output voltage of the power supply unit 41 to supply the output voltage of the power supply unit 41 to the second receiving unit 40 and a second switch 43 for detecting signals having the first transmission frequency among the signals received by the antenna ANT3, A third amplifier 45 for amplifying the detected signal, a filter 46 for filtering the amplified signal to remove noise and supplying the filtered signal to the speaker, And a ring signal detector (47) for detecting a ring signal from the signal and turning on the second switch (42). The wireless ear microphone according to claim 1, A fourth amplifier 52 for amplifying the filtered signal, a second amplifier 52 for amplifying the audio signal amplified by the fourth amplifier 52, A carrier generator 54 for generating a carrier for switching the mobile phone into a talk state after a predetermined time has elapsed when power is supplied, And a second transmitting unit (50) configured by a second frequency modulator (55) for modulating the frequency of the radio signal. The wireless hand free apparatus for a mobile phone according to any one of claims 1 to 5, wherein the first transmission frequency and the second transmission frequency are set differently from each other.